I’m sad I didn’t like this. I don’t know if the characters are supposed to be unlikable but I literally hated all of them. The few shark parts were good and kind of creepy, but other then that I was just annoyed and rolling my eyes.
What I didn’t like 

Weirdly mentioning a black man raping rich white women multiple times(had nothing to do with the plot)Brought it up again because it’s bad for tourism  
the weird sexual talk about children 
Cheating (I listen to the audiobook and I swear there was an hour chapter of a wife cheating on her husband)
Weird sexual things(i’m looking shaming but there was taco CNC which is fine but I feel weird when a man writes it just for I don’t know I just didn’t think it was well Done)
Hardly any shark action(there was about three scenes before they went after the shark and even then they were like very short)
Racism and antisemitic just casual 
Fat phobia
Character said I don’t care if he’s out laying girls scouts(like those are children sir).